With the goal of "Instrumentation for Every Student" in mind this project is intended to lower all barriers to providing a hardware and software platform for teaching electronic circuits to engineering students. Every student should have access to affordable hardware and software to measure their experiments. This project offers a free open source software user interface that is compatible with hardware produced in large quantities at low cost (ranging from $5 to $20) from multiple suppliers.
Currently available hardware interfaces (some are works in progress):
- Arduino compatible microcontroler boards:
- Adafruit QT Pi - SAMD21
- Adafruit Trinket M0 (ATSAMD21)
- Adafruit ItsyBitsy M0 Express (ATSAMD21)
- Adafruit ItsyBitsy M4 Express (ATSAMD51)
- Raspberry Pi Pico RP-2040
- With external R/2R DAC or SPI DAC or PWM analog AWG output
- SparkFun SAMD21 Mini Breakout (DEV-13664)
- SparkFun Thing Plus - SAMD51 (DEV-14713)
- Seeed Studio XIAO SAMD21
- Seeed Studio XIAO RP-2040
- With external SPI DAC or PWM analog AWG output
If you are not a technical individual or highly familiar with computer operating systems and you have your choice of computers, a Windows computer is highly recommended. You will usually run into fewer issues, if any, with that operating system.
Known Issues: If your computer encrypts files saved on external storge devices (USB disk drives) then the UF2 Bootloader method of flashing firmware to micro-controller boards will not work. You would need to use a different computer that does not encrypt files or consult your local system administrator.
Linux Operating system: On Linux computers access to USB based serial comms devices is not allowed for non root users by default. A udev rules file needs to be added. Place the 99-arduino.rules from this repository in etc/udev/rules.d
It contains one line per board / vendor:
SUBSYSTEMS=="usb", ATTRS{idVendor}=="802F", ATTRS{idProduct}=="2886", GROUP="dialout", MODE="0666"
The above idVendor value is board / vendor specific and may need to be adjusted to match your specific board(s). The one above is specifically for the XIAO SAMD21 board.
If this rules file does not work on your version of Linux there may be other things like this that work. Searching the web on how to make serial USB devices work may provide an alternate solution or consult with your local Linux expert.